Page 7 - Chemistry - XI

F. Qualitative Analysis

(a) Determination of one anion and one cation in a given salt
Cations: Pb , Cu , As , Al , Fe , Mn , Ni , Zn , Co , Ca , Sr , Ba , Mg , NH + 4
2+
2+
2+
2+
3+
3+
3+
2+
2+
2+
2+
2+
2+
Anions: CO , S , NO , SO , SO , NO , Cl , Br , I , PO , CH COO
3−
−
2−
2−
–
–
−
2−
–
2–
–
4
3
3
3
4
2
3
(Note: Insoluble salts excluded)
(b) Detection of -Nitrogen, Sulphur, Chlorine in organic compounds.
PROJECTS
Scientific investigations involving laboratory testing and collecting information from other sources.
A few suggested Projects
Ø Checking the bacterial contamination in drinking water by testing sulphide ion
Ø Study of the methods of purification of water
Ø Testing the hardness, presence of Iron, Fluoride, Chloride, etc., depending upon the regional
variation in drinking water and study of causes of presence of these ions above permissible
limit (if any).
Ø Investigation of the foaming capacity of different washing soaps and the effect of addition of
Sodium carbonate on it.
Ø Study the acidity of different samples of tea leaves.
Ø Determination of the rate of evaporation of different liquids Study the effect of acids and
bases on the tensile strength of fibers.
Ø Study of acidity of fruit and vegetable juices.